ICD-10 Code I97.121 – Postprocedural cardiac arrest following other surgery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I97.121 – Postprocedural cardiac arrest following other surgery
What it is
I97.121 identifies cardiac arrest that occurs after a surgical procedure other than cardiac surgery. Use it when the arrest is documented as a postoperative complication and linked to the prior operation.
Clinical signs
Typical findings include sudden loss of pulse, apnea, and unresponsiveness requiring immediate resuscitation. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states cardiac arrest occurred after surgery and the provider links it to the procedure. It is appropriate for postoperative arrest after noncardiac surgery, including events documented as a complication of the operation. Check documentation if the cause or timing is unclear.
Do not use for
Do not use it for cardiac arrest unrelated to surgery, or when the arrest occurred before the procedure. Do not use it for cardiac surgery complications unless the record specifically supports this code.
Coding tip
Confirm postoperative timing and the provider’s complication statement before assigning I97.121.